Man pages matching name tkvars in section 3tk:

tkvars.3tk.zh_CN	debian 10 / manpages-zh
tkvars.3tk.zh_TW	debian 10 / manpages-zh
tkvars.3tk.zh_CN	debian 11 / manpages-zh
tkvars.3tk.zh_TW	debian 11 / manpages-zh
tkvars.3tk.zh_CN	debian 12 / manpages-zh
tkvars.3tk.zh_TW	debian 12 / manpages-zh